<template>
  <div class="dashboard-container">
    <div class="app-container">
      <!-- 靠右的按钮 -->
      <page-tools>
        <el-button slot="after" type="primary" size="small" @click="addPermission(1,'0')">添加权限</el-button>
      </page-tools>
      <!-- 表格 -->
      <!-- 指定id为唯一标识 -->
      <el-table border :data="list" row-key="id">
        <el-table-column label="名称" prop="name" />
        <el-table-column align="center" label="标识" prop="code" />
        <el-table-column align="center" label="描述" prop="description" />
        <el-table-column align="center" label="操作">
          <template v-slot="{ row }">
            <!-- 添加按钮只在 访问权的层级显示 当type===1时 才显示 -->
            <el-button v-if="row.type === 1" type="text" @click="addPermission(2,row.id)">添加</el-button>
            <el-button type="text" @click="editPermission(row.id)">编辑</el-button>
            <el-button type="text" @click="delPermission(row.id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
    </div>
    <!-- 新增和编辑弹层 -->
    <el-dialog :title="showText" :visible="showDialog" @close="btnCancel">
      <!-- 表单 -->
      <el-form ref="perForm" label-width="120px" :rules="rules" :model="formData">
        <el-form-item label="名称" prop="name">
          <el-input v-model="formData.name" style="width: 90%" />
        </el-form-item>
        <el-form-item label="标识" prop="code">
          <el-input v-model="formData.code" style="width: 90%" />
        </el-form-item>
        <el-form-item label="描述" prop="description">
          <el-input v-model="formData.description" style="width: 90%" />
        </el-form-item>
        <el-form-item label="开启">
          <el-switch v-model="formData.enVisible" active-value="1" inactive-value="0" />
        </el-form-item>
      </el-form>
      <el-row slot="footer" type="flex" justify="center">
        <el-col :span="6">
          <el-button size="small" type="primary" @click="btnOk">确定</el-button>
          <el-button size="small" @click="btnCancel">取消</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script>
import { getPermissionList, delPermission, addPermission, updatePermission, getPermissionDetail } from '@/api/permission'
import { tranListToTreeData } from '@/utils'
export default {
  data() {
    return {
      list: [],
      showDialog: false,
      formData: {
        name: '',
        code: '',
        description: '',
        type: '',
        pid: '',
        enVisible: '0'
      },
      rules: {
        name: [{ required: true, message: '名称不能为空', trigger: 'blur' }],
        code: [{ required: true, message: '标识不能为空', trigger: 'blur' }]
      }
    }
  },
  computed: {
    showText() {
      return this.formData.id ? '编辑' : '新增'
    }
  },
  created() {
    this.getPermissionList()
  },
  methods: {
    async getPermissionList() {
      // 将数据转化成了 带children的树形结构
      this.list = tranListToTreeData(await getPermissionList(), '0')
    },
    async delPermission(id) {
      this.$confirm('确认删除该权限吗').then(() => {
        return delPermission(id)
      }).then(() => {
        this.$message.success('删除成功')
        // 重新拉取数据
        this.getPermissionList()
      })
    },
    addPermission(type, pid) {
      // pid表示当前数据父节点的表示
      this.formData.type = type
      this.formData.pid = pid
      this.showDialog = true
    },
    async btnOk() {
      this.$refs.perForm.validate().then(() => {
        if (this.formData.id) {
          return updatePermission(this.formData)
        }
        return addPermission(this.formData)
      }).then(() => {
        //  提示消息
        this.$message.success('新增成功')
        this.getPermissionList()
        this.showDialog = false
      })
    },
    btnCancel() {
      this.formData = {
        name: '',
        code: '',
        description: '',
        type: '',
        pid: '',
        enVisible: '0'
      }
      // 移除校验
      this.$refs.perForm.resetFields()
      this.showDialog = false
    },
    async editPermission(id) {
      this.formData = await getPermissionDetail(id)
      this.showDialog = true
    }
  }
}
</script>

<style>
</style>
